Electronic cigarette



FIG. 1 is a front elevation view of an electronic cigarette;

FIG. 2 is a left side elevation view of the electronic cigarette;

FIG. 3 is a top plan view of the electronic cigarette;

FIG. 4 is a bottom plan view of the electronic cigarette;

FIG. 5 is a perspective view of the electronic cigarette; and,

FIG. 6 is another perspective view of the electronic cigarette.

The broken lines in the drawings depict parts of the electronic cigarette that form no part of the claimed design. 

CLAIM The ornamental design for an electronic cigarette, as shown and described. 